JP5401155B2 - Non pneumatic tire - Google Patents

Description

  The present invention relates to a non-pneumatic tire that does not need to be filled with pressurized air when used.

In a conventional pneumatic tire that is used while being filled with pressurized air, the occurrence of puncture is an unavoidable problem in structure.
Therefore, as a non-pneumatic tire capable of preventing the occurrence of puncture, a so-called solid tire having a solid structure filled with a rubber material has been proposed, for example, as shown in Patent Document 1 below.

JP-A-6-293203

  However, the conventional non-pneumatic tires are heavier than pneumatic tires, and also have increased hardness and rolling resistance, which greatly deteriorates ride comfort and maneuverability, making it difficult to apply to general vehicles. Its scope of application was limited.

  The present invention has been made in consideration of such circumstances, and suppresses an increase in weight, hardness, and rolling resistance to ensure good riding comfort, maneuverability, and durability, and a contact pressure distribution. It aims at providing the non-pneumatic tire which can prevent generation | occurrence | production of puncture, aiming at equalization.

In order to solve the above problems and achieve such an object, the non-pneumatic tire of the present invention includes an attachment body attached to an axle, and a ring-like body surrounding the attachment body from the outside in the tire radial direction. A non-pneumatic tire provided with a plurality of connecting members that are provided along the tire circumferential direction and connect the attachment body and the ring-shaped body, and the connecting member removes the tire from its axial direction. In the seen tire side view, the first connecting plate curved so as to be convex toward one side in the tire circumferential direction, and the second connecting plate curved so as to be convex toward the other side, the ring-shaped body, while being divided into a plurality of divided bodies along the tire circumferential direction, each surface in these divided bodies constituting the outer peripheral surface of the ring-shaped body is not a flat surface, one of said For connecting member Each one end portion of the first connecting plate and the second connecting plate is connected across the plurality of divided bodies via attachment members that connect the plurality of divided bodies adjacent to each other in the tire circumferential direction. A plurality of the mounting members are provided along the tire circumferential direction, and the one mounting member includes a plurality of divided bodies connected to the one mounting member from the one side, and the one mounting member. A plurality of divided bodies that are sandwiched in the tire circumferential direction are connected to a plurality of divided bodies to which adjacent mounting members are connected from the other side .

In this invention, the non-pneumatic tire has a solid structure in which the attachment body and the ring-shaped body are connected by a plurality of connecting members provided along the tire circumferential direction, and the inside is filled with a rubber material. Therefore, it is possible to prevent the occurrence of puncture while suppressing the increase in weight, hardness and rolling resistance and ensuring good riding comfort and maneuverability.
In addition, the connecting member is a first connecting plate that is curved so as to be convex toward one side in the tire circumferential direction, and a second connecting plate that is curved so as to be convex toward the other side in the tire side view. Therefore, when an external force acts on the non-pneumatic tire and the attachment body and the ring-shaped body are relatively displaced in the tire radial direction, the tire circumferential direction, or the tire width direction, this displacement Accordingly, the first connecting plate and the second connecting plate can be easily elastically deformed, the non-pneumatic tire can be provided with flexibility, and transmission of vibrations to the vehicle can be suppressed. Riding comfort can be reliably ensured.
Furthermore, since the ring-shaped body is divided into a large number of divided bodies along the tire circumferential direction, the flexibility of the ring-shaped body is enhanced, and the first connecting plate according to the external force acting on the non-pneumatic tire In addition, not only the second connecting plate but also the ring-shaped body can be easily deformed. Therefore, it is possible to suppress variations in the contact pressure within the contact surface, and it is possible to more reliably ensure good riding comfort, and to provide a tread member on the outer peripheral surface side of the ring-shaped body as described later. When the is disposed, durability can be improved.
Furthermore, since it becomes possible to easily deform the ring-shaped body in this way, not only the load applied to both the above-described connecting plates themselves, but also each end portion and attachment attached to the ring-shaped body at both connecting plates The load applied to each other end connected to the body, that is, the connecting portion of both connecting plates can be greatly reduced, and the durability of the entire connecting member including this connecting portion can be improved.
Furthermore, since the ring-shaped body is divided into a large number of divided bodies along the tire circumferential direction as described above, this non-pneumatic tire can be easily formed. When a part is damaged, it is sufficient to replace only the damaged portion without replacing the entire ring-shaped body, and it is possible to improve the maintainability.
Moreover, since each surface which comprises the outer peripheral surface of a ring-shaped body is a flat surface in the above-mentioned divided body, for example, a non-pneumatic tire is grounded on a flat road surface, and the first connecting plate and the second connecting plate are When the tire is bent, all of the surfaces of the plurality of divided bodies located on the road surface in the tire can be substantially parallel to the road surface over the entire area, that is, on the same plane. Variations in contact pressure within the ground can be more reliably suppressed.
That is, each surface of the divided body is convex so as to protrude outward in the tire radial direction so that, for example, the outer peripheral surface of the ring-shaped body is a perfect circle centered on the axis of the non-pneumatic tire. When the tire is formed on a curved surface, when the tire is grounded on a flat road surface, a portion located at an intermediate portion in the tire circumferential direction is contacted with the road surface side on each surface of the plurality of divided bodies located on the road surface. On the other hand, the portion located on the outer side in the tire circumferential direction with respect to the intermediate portion gradually moves away from the road surface toward the inner side in the tire radial direction from the intermediate portion toward the outer side in the tire circumferential direction. It is impossible to make all the surfaces of the divided bodies run parallel to the road surface over the entire area.
In addition, when each connecting member is axisymmetric with respect to a virtual line extending along the tire radial direction in the tire side view, the spring along one side in the tire circumferential direction of the non-pneumatic tire It is possible to suppress the difference between the constant and the spring constant along the other side. Therefore, with this non-pneumatic tire in contact with the ground, it is possible to suppress the difference between the spring constant along the traveling direction and the spring constant along the braking direction at the ground contact portion of the tire, thereby ensuring good maneuverability. Can be secured.

In addition , since each end portion of both connecting plates in one connecting member is connected across a plurality of adjacent divided bodies in the tire circumferential direction, the number of divided bodies constituting the ring-shaped body is determined as described above. It is possible to easily secure a sufficient quantity to achieve the effects of the above, and when a tread member is disposed on the outer peripheral surface side of the ring-shaped body as will be described later, the grounding that acts on the tread member It is also possible to easily disperse the pressure in the tire circumferential direction, and it is possible to reliably suppress variations in the contact pressure within the contact surface.
In this configuration, the plurality of divided bodies may be elastically rigidly displaceable so that all the surfaces are located on the same plane.
In this case, since the plurality of divided bodies are elastically rigidly displaceable so that all of the surfaces are located on the same plane, the non-pneumatic tire is grounded on a flat road surface. In this case, in this tire, all of the surfaces of the plurality of divided bodies located on the road surface can be parallel to the road surface over almost the entire area.

Further, a tread member is disposed on the outer peripheral surface side of the ring-shaped body, and a pattern groove is formed on the outer peripheral surface of the tread member, and each of the first connecting plate and the second connecting plate is provided. The one end may be connected to a position corresponding to the pattern groove on the inner peripheral surface side of the ring-shaped body.
In this case, since the tread member is arranged on the outer peripheral surface side of the ring-shaped body over the entire circumference, it is possible to reliably improve riding comfort, grip performance, and durability of the non-pneumatic tire.
Moreover, since each one end part of a 1st connection plate and a 2nd connection plate is connected in the position corresponding to a pattern groove | channel on the inner peripheral surface side of a ring-shaped body, from the road surface at the time of this non-pneumatic tire grounding It is possible to reliably suppress the load applied to the entire connecting member and the load applied to the corresponding portion corresponding to each end of the first connecting plate and the second connecting plate in the tread member.
Among these, since it becomes possible to suppress the load applied to the corresponding portion of the tread member, it is possible to prevent the ground pressure from being locally increased at the corresponding portion of the tread member, and the ground pressure is reduced within the ground plane. It is possible to more reliably suppress variations.

Furthermore, each one end part of the 1st connection plate and the 2nd connection plate in one connection member makes the position of a tire width direction mutually differ in the same position in a tire circumferential direction in the inner peripheral surface side of the said ring-shaped body. Each of the connecting members is connected to each other, and a plurality of the first connecting plates are arranged at one tire width direction position along the tire circumferential direction, and the second connecting plate is arranged at another tire width direction position in the tire circumferential direction. A plurality may be provided along the tire circumferential direction so as to be arranged along the tire circumference.
In this case, each one end part of both connecting plates in one connecting member is connected to each other at different positions in the tire width direction at the same position in the tire circumferential direction on the inner peripheral surface side of the ring-shaped body, A plurality of first connecting plates are arranged along the tire circumferential direction at one tire width direction position, and a plurality of second connecting plates are arranged along the tire circumferential direction at other tire width direction positions. In addition, since a plurality of tires are provided along the tire circumferential direction, it is possible to suppress interference between adjacent connecting members in the tire circumferential direction, and more reliably suppress the number of arrangements from occurring. Can do.
In addition, when the tread member is disposed as described above, it becomes possible to further disperse the contact pressure acting on the tread member in the tire width direction, and the durability can be reliably improved. .

In addition, reinforcing ribs may protrude from the inner surface of the ring-shaped body toward the inner side in the tire radial direction in the multiple divided bodies.
In this case, since the reinforcing ribs are provided in the divided body, it is possible to improve the bending rigidity of the divided body, and to suppress the ground pressure from being varied due to the bending deformation of the divided body. Can do.

Furthermore, each of the first connection plate and the second connection plate may be formed of a metal material or a resin material.
In this case, occurrence of hysteresis loss can be almost eliminated, and rolling resistance can be reduced as compared with the pneumatic tire.

Moreover, each 1st connection plate connected with the inner peripheral surface side of the said ring-shaped body and each one end part of a 2nd connection plate, and the 1st connection plate and 2nd connection plate connected with the outer peripheral surface side of the said attachment body At least one of the other end portions may be supported so as to be rotatable around a rotation axis extending in parallel along the tire width direction.
In this case, at least one of the one end portions and the other end portions of the two connecting plates is supported so as to be rotatable around a rotation axis extending in parallel along the tire width direction, and thus an external force is applied to the non-pneumatic tire. When the attachment body and the ring-shaped body are relatively displaced as described above by operating, at least one of the attachment body and the ring-shaped body is locally largely deformed by rotating the at least one around the rotation axis. Can be suppressed. Therefore, it is possible to uniformly deform the both connecting plates with less deviation and suppress the load applied to at least one of them, and it is possible to further improve ride comfort and durability of the entire connecting member.
By the way, in the configuration in which at least one of the one end portions and the other end portions of the two connection plates is supported so as to be rotatable around the rotation axis, the number of connection members is limited due to space reasons. There is a risk of being. In this way, when the number of connecting members is limited, if one end of both connecting plates in one connecting member is connected to one divided body, the number of divided bodies becomes too small, There is a risk that the above-described effects will be difficult to be achieved.
That is, by adopting a configuration that supports at least one of each one end and each other end of both connecting plates so as to be rotatable around the rotation axis, even if the number of connecting members is reduced, As described above, by connecting the one end portions of both connection plates in one connection member across a plurality of adjacent division bodies in the tire circumferential direction, the number of division bodies constituting the ring-shaped body is It is possible to secure a sufficient quantity to achieve the above-described effects. In other words, by connecting each end of both connecting plates in one connecting member across a plurality of adjacent divided members in the tire circumferential direction, the number of divided members is independent of the number of connecting members. Many can be secured.

  According to the present invention, an increase in weight, hardness, and rolling resistance is suppressed to ensure good riding comfort, maneuverability and durability, and the occurrence of puncture is prevented while equalizing the contact pressure distribution. can do.

In 1st Embodiment which concerns on this invention, it is the schematic perspective view which decomposed | disassembled some non-pneumatic tires. It is a schematic perspective view which shows a part of non-pneumatic tire of FIG. In the non-pneumatic tire shown in FIG. 1, (a) the front view which looked at the connection member and the attachment body from the tire width direction, and (b) the side view of the front view shown to (a). FIG. 4 is an enlarged view of a portion X shown in FIG. In 2nd Embodiment which concerns on this invention, it is the schematic perspective view which decomposed | disassembled some non-pneumatic tires. It is a schematic perspective view which shows a part of non-pneumatic tire of FIG. In the non-pneumatic tire shown in FIG. 5, (a) the front view which looked at the connection member and the attachment body from the tire width direction, and (b) the side view of the front view shown to (a). FIG. 8 is an enlarged view of a portion X shown in FIG. In the non-pneumatic tire shown as other embodiments concerning the present invention, (a) The front view which looked at the connecting member and the attachment object from the tire width direction, and (b) The side view of the front view shown in (a) is there. In further another embodiment concerning the present invention, it is a schematic perspective view showing some non-pneumatic tires.

Hereinafter, a non-pneumatic tire according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 4.
The non-pneumatic tire 1 includes a mounting body 11 attached to an axle (not shown), a ring-shaped body 12 surrounding the mounting body 11 from the outside in the tire radial direction, and a plurality of mounting bodies 11 provided along the tire circumferential direction. A connecting member 13 that connects the outer peripheral surface side and the inner peripheral surface 12b side of the ring-shaped body 12, a tread member 14 disposed on the outer peripheral surface 12c side of the ring-shaped body 12 over the entire circumference, and the ring-shaped body 12 And a reinforcing layer 15 disposed between the tread member 14 and the tread member 14.

  The attachment body 11 is formed in a circular shape when viewed from the side of the tire when the non-pneumatic tire 1 is viewed from the direction of the axis O, and a plurality of attachment holes 11a are formed in the center portion in the radial direction. For example, bolts are inserted into the attachment holes 11a and screwed into female screw portions formed on the axle, so that the attachment body 11 is attached to the axle. In addition, the attachment body 11 is formed in the disk shape with the metal material.

The tread member 14 is formed in a cylindrical shape, and integrally covers the outer peripheral surface 12c side of the ring-shaped body 12 over the entire region. The thickness of the tread member 14 is about 10 mm, for example. In the present embodiment, a plurality of circumferential main grooves (pattern grooves) 14 a are formed on the outer peripheral surface of the tread member 14 at intervals in the tire width direction H. Further, the tread member 14 is made of, for example, vulcanized rubber obtained by vulcanizing natural rubber or / and a rubber composition, or a thermoplastic material. Examples of the thermoplastic material include a thermoplastic elastomer or a thermoplastic resin. Examples of the thermoplastic elastomer include an amide-based thermoplastic elastomer (TPA), an ester-based thermoplastic elastomer (TPC), an olefin-based thermoplastic elastomer (TPO), a styrene-based thermoplastic elastomer (TPS), and urethane as defined in JIS K6418. Examples thereof include a thermoplastic elastomer (TPU), a crosslinked thermoplastic rubber (TPV), and other thermoplastic elastomers (TPZ). Examples of the thermoplastic resin include urethane resin, olefin resin, vinyl chloride resin, and polyamide resin. In addition, it is preferable to form the tread member 14 with vulcanized rubber from the viewpoint of wear resistance.
The reinforcing layer 15 has a structure in which a plurality of steel cords are arranged and embedded inside a cylindrical rubber sheet. The reinforcing layer 15 may be formed integrally with the tread member 14. The reinforcing layer 15 is fixed by, for example, using an adhesive or the like so that the inner peripheral surface thereof is bonded to the outer peripheral surface 12 c of the ring-shaped body 12 and the outer peripheral surface is bonded to the inner peripheral surface of the tread member 14.

  The connecting member 13 includes a first connecting plate 21 curved so as to be convex toward one side in the tire circumferential direction and a second connecting plate curved so as to be convex toward the other side in the tire side view. 22. Further, the respective one end portions 21 a and 22 a of the first connecting plate 21 and the second connecting plate 22 in one connecting member 13 are connected to the same position in the tire circumferential direction on the inner peripheral surface 12 b side of the ring-shaped body 12. Yes. Furthermore, in the present embodiment, each of the one end portions 21a and 22a is connected to the inner peripheral surface 12b side of the ring-shaped body 12 with different positions in the tire width direction H from each other.

The shape of each connecting member 13 in the side view of the tire is line-symmetric with respect to an imaginary line L that extends through the tire circumferential direction center portion of the connecting member 13 along the tire radial direction, as shown in FIG. It has become. In the illustrated example, the imaginary line L passes through the one end portions 21 a and 22 a of the connecting plates 21 and 22 and the axis O.
That is, the lengths of both the connecting plates 21 and 22 are equal to each other, and the other end portions 21b and 22b of the both connecting plates 21 and 22 are arranged on the outer peripheral surface of the mounting body 11 in the tire side view. The same angle (for example, 45 ° or more and 135 ° or less, preferably 90 ° or more and 120 ° or less) on one side and the other side in the tire circumferential direction around the axis O from a position facing each end 21a, 22a in the tire radial direction. (Below) connected to each position separated by one.

  In addition, the plurality of connecting members 13 are separately arranged between the mounting body 11 and the ring-shaped body 12 at positions that are point-symmetric with respect to the axis O. Further, the connecting member 13 includes a plurality of first connecting plates 21 arranged along the tire circumferential direction at a position in one tire width direction H, and the second connecting plate 22 is a position in the one tire width direction H. A plurality (60 in the illustrated example) are provided along the tire circumferential direction so that a plurality of different tire width directions H are arranged along the tire circumferential direction. Furthermore, all the connecting members 13 have the same shape and size.

  Further, the first connecting plates 21 adjacent in the tire circumferential direction are substantially parallel to each other and opposed in the tire circumferential direction, and the second connecting plates 22 adjacent in the tire circumferential direction are also substantially parallel to each other. Opposing in the circumferential direction. Further, in the illustrated example, the other end portions 21 b and 22 b of both the connecting plates 21 and 22 are individually connected to both end portions in the tire width direction H on the outer peripheral surface of the attachment body 11.

  The sizes of the first connecting plate 21 and the second connecting plate 22 in the tire width direction H (the direction of the axis O), that is, the widths thereof are equal to each other. The thicknesses of the first connecting plate 21 and the second connecting plate 22 are also equal to each other. Further, the other end portions 21 b and 22 b of both the connecting plates 21 and 22 are connected so as to circumscribe the outer peripheral surface of the attachment body 11.

  In the present embodiment, the ring-shaped body 12 is divided into a large number of divided bodies 12a along the tire circumferential direction. The divided body 12a is formed of a metal material. Moreover, the peripheral edge of the division body 12a adjacent in a tire circumferential direction mutually adjoins or contact | abuts. Furthermore, each surface which forms the outer peripheral surface 12c of the ring-shaped body 12 in many divided bodies 12a is a flat surface. That is, in the divided body 12a alone, when the surface is placed on a flat surface, the surface of the divided body 12a contacts the entire flat surface.

  Further, in the present embodiment, reinforcing ribs 12d project from the inner surface 12b of the ring-shaped body 12 in the divided body 12a toward the inner side in the tire radial direction. In the illustrated example, the reinforcing ribs 12d are provided over the entire length in the tire circumferential direction separately at both ends in the tire width direction H on the back surface of the divided body 12a. Further, the reinforcing rib 12d is formed in a plate shape, and the thickness thereof is equal to the thickness of the divided body 12a.

  And each one end part 21a, 22a of both the connection plates 21 and 22 in the one connection member 13 is connected ranging over several division body 12a which adjoins mutually in the tire circumferential direction (three in the example of illustration). Yes. In the illustrated example, the one end portions 21a and 22a of both the connecting plates 21 and 22 in one connecting member 13 are the other end portion from the center portion in the tire width direction H on the inner peripheral surface 12b side of the ring-shaped body 12. It is connected to a position shifted to the side (opposite vehicle side). Furthermore, the size of the divided body 12a in the tire circumferential direction is, for example, about one tenth of the size in the tire width direction H.

Here, a flat plate 19a and a central portion in the tire circumferential direction on the surface of the flat plate 19a are formed on the back surface constituting the inner peripheral surface 12b of the ring-shaped body 12 in the plurality of divided bodies 12a adjacent to each other in the tire circumferential direction. A mounting member 19 including the provided block-like body 19b is bonded or joined, and the plurality of divided bodies 12a adjacent to each other in the tire circumferential direction are connected by the mounting member 19. The plurality of divided bodies 12a can be rigidly displaced so that all of the surfaces are located on the same plane. That is, the flat plate 19a is elastically deformed, so that the plurality of divided bodies 12a can be elastically rigidly displaced as described above.
Moreover, the attachment member 19 is arrange | positioned in the position which shifted | deviated from the center part of the tire width direction H to the other end side in the said back surface of the division body 12a. And the one end parts 21a and 22a of both the connection plates 21 and 22 in the one connection member 13 are connected with the surface which faces the inner side of a tire radial direction in the said block-shaped body 19b so that it may circumscribe.

  In the illustrated example, the size of the attachment body 11 in the tire width direction H is about half of the size of the ring-shaped body 12 in the tire width direction H. Thereby, the non-pneumatic tire 1 is mounted on the vehicle in a state where one end portion side in the tire width direction H is positioned on the vehicle side and the other end portion side in the tire width direction H is positioned on the non-vehicle side. Then, a space for storing a brake or the like is secured in a portion located on the vehicle side of the attachment body 11 on the inner side in the tire radial direction of the ring-shaped body 12.

  Furthermore, in this embodiment, each one end part 21a, 22a of both the connection plates 21 and 22 is a plurality of circumferential main grooves 14a formed on the outer peripheral surface of the tread member 14 on the inner peripheral surface 12b side of the ring-shaped body 12. It is connected to the position corresponding to one of them through the block-like body 19b.

Here, in the present embodiment, each of the first connecting plate 21 and the second connecting plate 22 is formed of, for example, a metal material or a resin material that has almost no hysteresis loss.
When the first connecting plate 21 and the second connecting plate 22 are made of a metal material such as steel, stainless steel, or aluminum alloy, both end portions 21a of the first connecting plate 21 and the second connecting plate 22 are used. 21b and 22a, 22b are connected to the outer peripheral surface of the mounting body 11 and the block-shaped body 19b (on the inner peripheral surface 12b side of the ring-shaped body 12) by welding or fastening members.
Moreover, when the 1st connection board 21 and the 2nd connection board 22 are formed with the resin material, both ends 21a, 21b and 22a, 22b of each of the 1st connection board 21 and the 2nd connection board 22 are attached body 11. And the block-like body 19b (the inner circumferential face 12b side of the ring-like body 12) are connected by bonding the resin material or fastening them with a fastening member.

  As described above, according to the non-pneumatic tire 1 according to the present embodiment, the attachment body 11 and the ring-shaped body 12 are connected by the connection members 13 provided in a plurality along the tire circumferential direction. Since it is not a solid structure filled with rubber material, it is possible to prevent the occurrence of puncture while suppressing the increase in weight, hardness and rolling resistance and ensuring good riding comfort and maneuverability .

  In addition, the connecting member 13 is a first connecting plate 21 that is curved so as to be convex toward one side in the tire circumferential direction and a second that is curved so as to be convex toward the other side in the tire side view. Since the connecting plate 22 is provided, external force acts on the non-pneumatic tire 1 so that the attachment body 11 and the ring-shaped body 12 are relatively in the tire radial direction, the tire circumferential direction, or the tire width direction H. When displaced, the first connecting plate 21 and the second connecting plate 22 can be easily elastically deformed in accordance with the displacement, and the non-pneumatic tire 1 can be provided with flexibility. The transmission of vibration to the vehicle can be suppressed, and good ride comfort can be ensured.

  Furthermore, since each connecting member 13 is axisymmetric with respect to the virtual line L in the side view of the tire, the spring constant along one side in the tire circumferential direction and the other side of the non-pneumatic tire 1 are along. It is possible to suppress a difference between the spring constant and the spring constant. Therefore, in a state where the non-pneumatic tire 1 is grounded, the difference between the spring constant along the traveling direction and the spring constant along the braking direction in the grounded portion of the tire 1 can be suppressed, and good maneuverability is achieved. Can be ensured.

  Furthermore, since the ring-shaped body 12 is divided into a large number of divided bodies 12a along the tire circumferential direction, the flexibility of the ring-shaped body 12 is enhanced, and according to the external force acting on the non-pneumatic tire 1 Thus, not only the first connecting plate 21 and the second connecting plate 22 but also the ring-shaped body 12 can be easily deformed. Therefore, it is possible to suppress the variation in the contact pressure within the contact surface, and it is possible to more reliably ensure good riding comfort and to prevent uneven wear on the tread member 14. .

  Furthermore, since the ring-shaped body 12 can be easily deformed in this way, not only the load applied to the both connecting plates 21 and 22 itself but also the ring-shaped body 12 in the both connecting plates 21 and 22. It is possible to greatly relieve the load applied to the connected one end portions 21a, 22a and the other end portions 21b, 22b connected to the attachment body 11, that is, the connecting portions of the connecting plates 21, 22. The durability of the entire connecting member 13 including the portion can be enhanced.

Furthermore, since the ring-shaped body 12 is divided into a large number of divided bodies 12a along the tire circumferential direction as described above, the non-pneumatic tire 1 can be easily formed. When a part of the shaped body 12 is damaged, it is sufficient to replace only the damaged portion without replacing the entire ring-shaped body 12, and it is possible to improve the maintainability.
Furthermore, in the present embodiment, since the tread member 14 is disposed on the outer peripheral surface 12c side of the ring-shaped body 12 over the entire circumference, the ride comfort, grip performance, and durability of the non-pneumatic tire 1 are increased. Can be reliably improved.

  Moreover, since each surface which comprises the outer peripheral surface 12c of the ring-shaped body 12 in the above-mentioned division body 12a is a flat surface, for example, the non-pneumatic tire 1 is grounded on a flat road surface in FIG. 3 and FIG. As shown, when the first connecting plate 21 and the second connecting plate 22 are bent, all the surfaces of the plurality of divided bodies 12a positioned on the road surface in the tire 1 are substantially parallel to the road surface over the entire area. , That is, on the same plane, the variation in the contact pressure within the contact surface can be more reliably suppressed.

  That is, each surface of the divided body 12a is projected outward in the tire radial direction so that the outer peripheral surface 12c of the ring-shaped body 12 becomes a perfect circle centering on the axis O of the non-pneumatic tire 1, for example. When the tire 1 is grounded on a flat road surface, a portion located at the middle portion in the tire circumferential direction on each surface of the plurality of divided bodies 12a located on the road surface However, the portion that is in contact with the road surface via the reinforcing layer 15 and the tread member 14 and that is located outside the intermediate portion in the tire circumferential direction gradually increases from the intermediate portion toward the outer side in the tire circumferential direction. It will be inward of the direction and away from the road surface, and all of the surfaces of the plurality of divided bodies 12a cannot be parallel to the road surface over the entire area.

  Furthermore, since each one end part 21a, 22a of both the connection plates 21 and 22 in the one connection member 13 is connected ranging over the some division body 12a mutually adjacent in the tire circumferential direction, the ring-shaped body 12 is attached. It is possible to easily secure a sufficient number of the divided bodies 12a to constitute the above-described effects, and to easily disperse the contact pressure acting on the tread member 14 in the tire circumferential direction. It becomes possible, and the dispersion | variation in the grounding pressure within a grounding surface can be suppressed reliably.

  Further, since the plurality of divided bodies 12a are elastically rigidly displaceable so that all the surfaces are located on the same plane, the non-pneumatic tire 1 is grounded on a flat road surface. In this case, in the tire 1, all the surfaces of the plurality of divided bodies 12 a located on the road surface can be substantially parallel to the road surface over the entire area.

Further, the one end portions 21 a and 22 a of the first connecting plate 21 and the second connecting plate 22 correspond to the circumferential main grooves 14 a formed on the outer peripheral surface of the tread member 14 on the inner peripheral surface 12 b side of the ring-shaped body 12. Since the non-pneumatic tire 1 is grounded, the load applied to the entire connecting member 13 from the road surface and the first connecting plate 21 and the first tread member 14 are The load applied to the corresponding portions corresponding to the one end portions 21a and 22a of the two connecting plates 22 can be reliably suppressed.
Among these, since it is possible to suppress the load applied to the corresponding portion of the tread member 14, it is possible to prevent the ground pressure from being locally increased at the corresponding portion of the tread member 14, and to ground within the ground plane. It is possible to suppress the pressure variation more reliably.

  Moreover, each end part 21a, 22a of both the connection plates 21 and 22 in one connection member 13 mutually positions the position of the tire width direction H in the same position in the tire circumferential direction on the inner peripheral surface 12b side of the ring-shaped body 12. Differently connected to each other, a plurality of connecting members 13 are arranged in the tire circumferential direction at the first connecting plate 21 along the tire circumferential direction, and the second connecting plate 22 is positioned at the other tire width direction. Are provided along the tire circumferential direction so as to be arranged along the tire circumferential direction, it becomes possible to suppress interference between the connecting members 13 adjacent in the tire circumferential direction, and the arrangement thereof It is possible to reliably prevent the number from being limited, and it is also possible to further disperse the contact pressure acting on the tread member 14 in the tire width direction H. It can be reliably prevented that occurs.

Furthermore, since the reinforcing rib 12d protrudes inward in the tire radial direction on each back surface forming the inner peripheral surface 12b of the ring-shaped body 12 in the divided body 12a, the bending rigidity of the divided body 12a is improved. It is possible to prevent the ground pressure from varying due to the bending deformation of the divided body 12a.
Furthermore, since the first connecting plate 21 and the second connecting plate 22 are each formed of a metal material or a resin material, it is possible to substantially eliminate the occurrence of hysteresis loss, and the rolling resistance is reduced as compared with the pneumatic tire. can do.

  Next, a second embodiment of the non-pneumatic tire according to the present invention will be described with reference to FIGS. 5 to 8. The same reference numerals are given to the same portions as those in the first embodiment, and the description will be made. Are omitted, and only different points will be described.

In the non-pneumatic tire 2, the one end portions 21 a and 22 a and the other end portions 21 b and 22 b of the connecting plates 21 and 22 are rotatable about a rotation axis R extending in parallel along the tire width direction H. It is supported.
A plurality of first support protrusions 32 projecting outward in the tire radial direction are provided at both ends in the tire width direction H on the outer peripheral surface of the attachment body 31 at equal intervals in the tire circumferential direction. A first bearing hole 32 a penetrating in the tire width direction H is formed in the one support protrusion 32.
And each 1st support protrusion 32 located in the both ends of the tire width direction H in the outer peripheral surface of the attachment body 31 has mutually opposed in the tire width direction H, and was formed in these 1st support protrusions 32. The first bearing hole 32a is located coaxially with the rotation axis R.

  The attachment member 37 includes a flat plate 37a disposed across the plurality of divided bodies 12a, and a pair of second support protrusions provided on the surface of the flat plate 37a so as to protrude from each other in the tire width direction H. Part 37b. Further, a second bearing hole penetrating in the tire width direction H is formed in these second support protrusions 37b. These second bearing holes are located coaxially with the rotation axis R.

Here, in this embodiment, a first shaft portion 35 extending in parallel along the tire width direction H is attached to each of the other end portions 21b and 22b of both the connecting plates 21 and 22, and this first shaft Both end portions of the portion 35 protrude outside the connecting plates 21 and 22 in the tire width direction H. Furthermore, in this embodiment, each one end part 21a of both the connection plates 21 and 22 is connected via the 2nd axial part 36 extended along the tire width direction H. As shown in FIG. Both end portions of the second shaft portion 36 protrude outward in the tire width direction H from both the connecting plates 21 and 22.
Both end portions of the first shaft portion 35 are rotatably inserted into the first bearing hole 32a, and both end portions of the second shaft portion 36 are rotatably inserted into the second bearing hole.

  As described above, according to the non-pneumatic tire 2 according to the present embodiment, the one end portions 21a and 22a and the other end portions 22b and 22b (hereinafter referred to as connection portions) of both the connecting plates 21 and 22 are Since it is supported so as to be rotatable about the rotation axis R, an external force acts on the non-pneumatic tire 2 so that the attachment body 31 and the ring-shaped body 12 are relatively in the tire radial direction, tire circumferential direction, or tire width direction. When the connecting portions 21 and 22 are displaced to H, the connecting portions of both the connecting plates 21 and 22 are rotated around the rotation axis R, whereby the connecting portions can be prevented from being greatly deformed locally. Accordingly, the entire connecting plates 21 and 22 can be uniformly deformed with little deviation to suppress the load applied to the connecting portion, and the riding comfort and the durability of the connecting member 13 as a whole can be further enhanced. it can.

  By the way, in the configuration in which the connecting portions of both the connecting plates 21 and 22 are rotatably supported around the rotation axis R, the number of the connecting members 13 may be limited due to space reasons. When the number of connecting members 13 is limited in this way, if one end 21a, 22a of both connecting plates 21, 22 in one connecting member 13 is connected to one divided body 12a, the divided members 12a are divided. The number of the bodies 12a becomes too small, and the above-described effects are not achieved.

  That is, as described above, even if the number of connecting members 13 is reduced by adopting a configuration in which the connecting portions of both the connecting plates 21 and 22 are rotatably supported around the rotation axis R, as described above, 1 The divided bodies constituting the ring-shaped body 12 by connecting the one end portions 21a, 22a of the two connecting plates 21, 22 in one connecting member 13 across the plurality of divided bodies 12a adjacent to each other in the tire circumferential direction. As for the number of 12a, it becomes possible to secure a sufficient quantity to achieve the above-mentioned effects. That is, the connection members 13 are arranged by connecting the one end portions 21a, 22a of the connection plates 21, 22 in one connection member 13 across the plurality of divided bodies 12a adjacent to each other in the tire circumferential direction. Regardless of the number, a large number of divided bodies 12a can be secured.

The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, in each said embodiment, although the structure provided with the 1st connection board 21 and the 2nd connection board 22 each as the connection member 13 was shown, it replaced with this and the 1st connection to the one connection member 13 was carried out. A configuration may be adopted in which a plurality of the plates 21 and the second connecting plates 22 are provided with different positions in the tire width direction H from each other.
A plurality of connecting members 13 may be provided along the tire width direction H between the attachment body 11 and the ring-shaped body 12.
Furthermore, although the disk-shaped body was shown as the attachment bodies 11 and 31, it may replace with this and may employ | adopt a ring-shaped body etc., for example.

Moreover, in each said embodiment, although the circumferential edge of the division body 12a adjacent in a tire circumferential direction mutually adjoined or contact | abutted, you may space apart in a tire circumferential direction. In this case, the flexibility of the non-pneumatic tires 1 and 2 can be reliably increased.
Furthermore, the material which forms the 1st connection board 21 and the 2nd connection board 22 is not restricted to said each embodiment, You may change suitably.
Further, the other end portions 21b and 22b of the first connecting plate 21 and the second connecting plate 22, respectively, sandwich the axis O in the tire radial direction on the outer peripheral surfaces of the attachment bodies 11 and 31, for example, instead of the above embodiments. May be separately connected to positions opposite to each other, or on the outer peripheral surfaces of the attachment bodies 11 and 31, the one end portions 21a and 22a of the first connection plate 21 and the second connection plate 22 may be connected in the tire radial direction. You may connect with the position etc. which oppose by.
Further, in each of the above embodiments, the reinforcing layer 15 is fixed by bonding its inner peripheral surface to the outer peripheral surface 12c of the ring-shaped body 12 and bonding the outer peripheral surface to the inner peripheral surface of the tread member 14 via an adhesive or the like. However, instead of this, for example, the outer peripheral surface 12c of the ring-shaped body 12 and the inner peripheral surface of the reinforcing layer 15 are brought into close contact with each other by the elastic restoring force of both the connecting plates 21 and 22, and the outer peripheral surface of the reinforcing layer 15 And the inner peripheral surface of the tread member 14 may be brought into close contact with each other. The reinforcing layer 15 may not be provided.

Moreover, in each said embodiment, although the reinforcement rib 12d was provided over the full length of the tire circumferential direction separately in the both ends of the tire width direction H in the back surface of the division body 12a, both the said connection plates 21 are provided in the back surface of the division body 12a. , 22 is not particularly limited as long as it is a position excluding a portion where the one end portions 21a, 22a are connected. For example, out of both end portions in the tire width direction H on the back surface of the divided body 12a It may be provided only on one of these, or may be provided on at least one of both ends in the tire circumferential direction on the back surface of the divided body 12a.
Further, the reinforcing rib 12d may not be provided.

Furthermore, in each said embodiment, although each end part 21a, 22a of the both connection plates 21 and 22 in the one connection member 13 was connected ranging over several division body 12a mutually adjacent in the tire circumferential direction, You may connect each one end part 21a, 22a of the both connection plates 21 and 22 in the one connection member 13 to the one division body 12a.
Moreover, in each said embodiment, each circumferential end main groove | channel formed in the outer peripheral surface of the tread member 14 in each end part 21a, 22a of both the connection plates 21 and 22 in the inner peripheral surface 12b side of the ring-shaped body 12 is provided. Although it connected via the said block-shaped body 19b to the position corresponding to one of 14a, you may connect with the arbitrary positions in the inner peripheral surface 12b side of the ring-shaped body 12. FIG.

Moreover, it replaces with said each embodiment, and each end part 21a, 22a of both the connection plates 21 and 22 may be connected to the inner peripheral surface 12b side of the ring-shaped body 12 by making a tire circumferential direction position mutually differ. .
Furthermore, in each said embodiment, each end part 21a, 22a of both the connection plates 21 and 22 is the circumferential direction main groove 14a formed in the outer peripheral surface of the tread member 14 in the inner peripheral surface 12b side of the ring-shaped body 12. Although the structure connected via the block-like body 19b at the corresponding position is shown, instead of this, for example, a lateral groove (pattern groove) is formed on the outer peripheral surface of the tread member 14, and the two connection plates 21, 22 are connected. The one end portions 21 a and 22 a may be connected to positions corresponding to the lateral grooves on the inner peripheral surface 12 b side of the ring-shaped body 12.
In the second embodiment, the one end portions 21a and 22a and the other end portions 22b and 22b of the connecting plates 21 and 22 are both supported rotatably around the rotation axis R. However, at least one of the one end portions 21a and 22a and the other end portions 22b and 22b may be rotatably supported around the rotation axis R.

Furthermore, in each said embodiment, each other end part 21b, 22b of both the connection plates 21 and 22 is said tire one end part 21a and 22a and tire radial direction in the outer peripheral surface of the attachment body 11 and 31 in the said tire side view. For example, 45 ° or more and 135 ° or less, preferably 90 ° or more and 120 ° or less as shown in FIGS. 3 and 7, respectively, on the one side and the other side in the tire circumferential direction centering on the axis O from the opposing position. In this range, the connecting plates 21 and 22 can be easily deformed according to the input to improve the riding comfort by connecting them to each position separated by the same angle. Both connecting plates are used to reduce the weight of the non-pneumatic tires 1 and 2 while preventing the interference between the two connecting plates 21 and 22 adjacent in the tire circumferential direction while securing a large number of installations. 21, 2 The other end portions 21b and 22b of the mounting body 11 and 31 are arranged on one side and the other side in the tire circumferential direction centering on the axis O from the facing position on the outer peripheral surface of the mounting bodies 11 and 31, for example, in the tire side view. As shown in FIG. 4, the positions may be separately connected to positions separated by the same angle within a range of 20 ° to less than 90 °.
Further, the tread member 14 may not be provided on the outer peripheral surface 12 c side of the ring-shaped body 12.
Further, the shape of the connecting member 13 in the side view of the tire may be asymmetric with respect to the virtual line L.

  In addition, as shown in FIG. 10, an elastic member 38 that extends along the tire circumferential direction and connects a large number of divided bodies 12 a in the tire circumferential direction may be provided in the ring-shaped body 12. In the illustrated example, the elastic member 38 extends over the entire circumference along the tire circumferential direction, and is formed in a ring shape whose outer diameter is equal to the inner diameter of the ring-shaped body 12. The outer peripheral surface of the elastic member 38 is bonded or bonded to the inner peripheral surface of the ring-shaped body 12. A flat plate 37 a of the attachment member 37 is bonded or joined to the inner peripheral surface of the elastic member 38. Further, the elastic member 38 is made of, for example, a metal material, natural rubber or / and a vulcanized rubber obtained by vulcanizing a rubber composition, or a thermoplastic material. Examples of the metal material include aluminum and stainless steel. Examples of the thermoplastic material include the aforementioned thermoplastic elastomers or thermoplastic resins. The bending rigidity of the elastic member 38 may be higher than the bending rigidity along the tire circumferential direction of each of the first connecting plate 21 and the second connecting plate 22. Further, the size of the elastic member 38 in the tire width direction H is equal to the size of the flat plate 37a in the tire width direction H.

In this case, since the elastic member 38 that extends along the tire circumferential direction and connects a large number of divided bodies 12a in the tire circumferential direction is provided in the ring-shaped body 12, the deformation of the ring-shaped body 12 occurs. It becomes possible to regulate the amount, and by dividing the ring-shaped body 12 into a large number of divided bodies 12a, it is possible to suppress the flexibility of the ring-shaped body 12 from becoming excessively high.
Therefore, it is possible to reliably suppress variations in contact pressure and vibrations in the contact surface, and increase the rolling resistance of the non-pneumatic tire by dividing the ring-shaped body 12 into a large number of divided bodies 12a. Or an increase in the load on the connecting plates 21 and 22 can be suppressed.

Among these, since it becomes possible to suppress that the load concerning both the connection plates 21 and 22 becomes high, in order to divide the ring-shaped body 12 into many division bodies 12a, both connection plates 21 and 22 are used. Therefore, it is not necessary to improve the durability by increasing the bending rigidity, and it is possible to suppress an increase in the weight of the connecting plates 21 and 22. Therefore, it is possible to prevent the weight of the non-pneumatic tire from increasing as the ring-shaped body 12 is divided into a large number of divided bodies 12a.
Furthermore, since a large number of divided bodies 12a are connected in the tire circumferential direction not by a rigid body but by an elastic member 38, it is possible to prevent the ground contact area from being greatly reduced, and the load received from the road surface is reduced. Dispersion over a wide range of the non-pneumatic tire via the elastic member 38 makes it possible to prevent a portion where a large load is applied locally, and improve durability.
In addition, since the elastic member 38 is formed in a ring shape whose outer diameter is equivalent to the inner diameter of the ring-shaped body 12, when the non-pneumatic tire is manufactured, for example, a plurality of elastic members 38 are used as a reference. It becomes possible to specify the arrangement position of the divided body 12a, and a non-pneumatic tire can be formed easily and with high accuracy.

The elastic member is not limited to the illustrated example, and for example, a coil spring, a bundled wire, a single wire or a stranded wire may be adopted.
Moreover, the arrangement | positioning position of the elastic member 38 will not be restricted to the position shown in figure, if it is a position which can connect many division bodies 12a in a tire circumferential direction in the ring-shaped body 12. FIG.
Further, although the elastic member 38 is continuously extended over the entire circumference along the tire circumferential direction, it may be intermittently scattered or extended along the tire circumferential direction. For example, the elastic member 38 is divided into a large number of elastic divided bodies along the tire circumferential direction, and two divided bodies 12a are connected in the tire circumferential direction by one elastic divided body, and the two elastic divided bodies 1 The elastic member 38 may be extended over the entire circumference in the tire circumferential direction by being connected to the two divided bodies 12a, and the multiple divided bodies 12a may be connected over the entire circumference in the tire circumferential direction by the elastic member 38. . In this case, the elastic member 38 can be easily formed, and the elastic member 38 can be easily assembled to the ring-shaped body 12.

  In addition, it is possible to appropriately replace the constituent elements in the above-described embodiments with well-known constituent elements without departing from the spirit of the present invention, and the above-described modified examples may be appropriately combined.

Next, the verification test about the effect demonstrated above was implemented.
The non-pneumatic tire 1 shown in FIGS. 1 to 4 was adopted as Example 1, and the non-pneumatic tire 2 shown in FIGS. 5 to 8 was adopted as Example 2.
As Comparative Example 1, in the non-pneumatic tire 1 of Example 1, each one end 21a, 22a of both connecting plates 21, 22 in one connecting member 13 is divided into three divided bodies 12a. As a comparative example 2, in the non-pneumatic tire 2 of Example 2, each end portion 21a, 22a of both connection plates 21, 22 in one connection member 13 is divided into three divided bodies. In the non-pneumatic tire 1 of Example 1 as a comparative example 3, each surface of the large number of divided bodies 12a is connected to one ring body 12a. A configuration was adopted in which the outer peripheral surface 12c was formed in a convex curved surface so as to be convex outward in the tire radial direction so as to be a perfect circle centered on the axis O.
As a conventional example, a pneumatic tire having an internal pressure of 230 kPa was adopted.
The tire sizes of these Example 1, Example 2, Comparative Example 1, Comparative Example 2, Comparative Example 3 and Conventional Example were all 195 / 55R16.

In Example 1, the size and thickness in the tire width direction H of both the connecting plates 21 and 22 are 18 mm and 3.0 mm, respectively, and the size and thickness in the tire circumferential direction of the split body 12a of the ring-shaped body 12 are set. The thicknesses were 16 mm and 3.5 mm, respectively.
In Example 2, the size and thickness in the tire width direction H of both the connecting plates 21 and 22 are 18 mm and 2.0 mm, respectively, and the size and thickness in the tire circumferential direction of the divided body 12a of the ring-shaped body 12 are set. They were 16 mm and 3.5 mm, respectively.
Further, for all of Example 1, Example 2, Comparative Example 1, Comparative Example 2 and Comparative Example 3, both connecting plates 21 and 22 were made of stainless steel, and ring-shaped body 12 was made of an aluminum alloy.

First, using the conventional example as an evaluation criterion (100), the weight, rolling resistance, spring constant in the traveling direction, and spring constant in the braking direction were evaluated by indices for the non-pneumatic tire of Example 1.
Regarding rolling resistance, the resistance force acting on the drum shaft was measured when each of the tires described above was rotated at a speed of 80 km / h while being pressed onto the drum of the drum tester with a force of 4.0 kN. did.
For each of the spring constants, when the above-described tire is pressed onto the rigid plate with a force of 4.0 kN, the rigid plate is pushed in a direction along the tire circumferential direction out of the directions orthogonal to the pressing direction. And the amount of movement (the amount of deformation of the tire).

The results are shown in Table 1.
In this table, it is shown that the smaller the numerical value, the better the weight and rolling resistance, and the larger the numerical value, the larger the spring constant.

  As a result, in the non-pneumatic tire of Example 1, it was confirmed that the rolling resistance could be reduced as compared with the pneumatic tire of the conventional example while suppressing the increase in weight, and while suppressing the increase in the respective spring constants, It has been confirmed that the spring constants can be made equal to each other in the same manner as the conventional pneumatic tire.

Next, using Comparative Example 1 as an evaluation criterion (100), the non-pneumatic tires of Example 1, Example 2 and Comparative Example 2 were evaluated for index of ground pressure standard deviation, riding comfort and durability.
For the ground pressure standard deviation, the ground shape was obtained by pressing each non-pneumatic tire of Comparative Examples 1 and 2 and Examples 1 and 2 onto a flat plate with pressure of 4.0 kN through pressure sensitive paper. The ground contact shape was measured by image processing.
Riding comfort was evaluated based on the feeling of the driver when each of the tires described above was mounted on a vehicle and two people were on the vehicle and the vehicle was running.
For durability, the non-pneumatic tires of Comparative Examples 1 and 2 and Examples 1 and 2 were rotated at a speed of 81 km / h in a state where the non-pneumatic tires were pressed onto the drum of the drum tester with a force of 5.2 kN. Evaluation was based on the time when the failure occurred.

The results are shown in Table 2.
In this table, it is shown that the ground pressure standard deviation is better as the numerical value is smaller, and the ride comfort and durability are better as the numerical value is larger.

As a result, in each of the comparison between the non-pneumatic tire 1 of Example 1 and the non-pneumatic tire of Comparative Example 1, and the comparison of the non-pneumatic tire 2 of Example 2 and the non-pneumatic tire of Comparative Example 2, In the example, it was confirmed that the contact pressure distribution could be reduced as compared with the comparative example, and the riding comfort and durability could be improved as compared with the comparative example.
Furthermore, in the non-pneumatic tire 2 of Example 2, it was confirmed that the contact pressure distribution was further reduced, and further, ride comfort and durability were further improved.

Further, with respect to the non-pneumatic tire 1 of Example 1 using Comparative Example 3 as an evaluation criterion, the contact area and the contact pressure standard deviation were evaluated by indices.
The contact area and contact pressure standard deviation were measured by image processing of the contact shape obtained in the same manner as described above.
The results are shown in Table 3.
In this table, the larger the numerical value, the larger the contact area, and the smaller the numerical value, the better the contact pressure standard deviation.

  As a result, in the non-pneumatic tire 1 of Example 1, it was confirmed that the contact area can be increased and the contact pressure distribution can be reduced as compared with the non-pneumatic tire of Comparative Example 3. It was.

  It is possible to prevent the occurrence of puncture while suppressing the increase in weight, hardness and rolling resistance, ensuring good ride comfort, maneuverability and durability, and equalizing the contact pressure distribution.

DESCRIPTION OF SYMBOLS 1, 2 Non-pneumatic tire 11, 31 Attachment body 12 Ring-shaped body 12a Divided body 12b Inner circumferential surface of ring-shaped body 12c Outer circumferential surface of ring-shaped body 12d Reinforcement rib 13 Connecting member 14 Tread member 14a Circumferential main groove (pattern) groove)
21 First connecting plate 22 Second connecting plate 21a, 22a One end 21b, 22b Other end H Tire width direction L Virtual line O Axis line R Rotation axis

Claims (7)

An attachment attached to the axle;
A ring-shaped body surrounding the mounting body from the outside in the tire radial direction;
A non-pneumatic tire provided with a plurality of connecting members that are provided along the tire circumferential direction and connect the attachment body and the ring-shaped body,
The connecting member has a first connecting plate that is curved so as to be convex toward one side in the tire circumferential direction and a convex toward the other side in a tire side view when the tire is viewed from the axial direction. A second connecting plate curved to
The ring-shaped body is divided into a large number of divided bodies along the tire circumferential direction, and in each of the divided bodies, each surface forming the outer peripheral surface of the ring-shaped body is a flat surface ,
One end of each of the first connecting plate and the second connecting plate in one connecting member is connected to the plurality of divided bodies through attachment members that connect the plurality of divided bodies adjacent to each other in the tire circumferential direction. Connected across,
A plurality of the attachment members are provided along the tire circumferential direction,
One mounting member includes a plurality of divided bodies connected to the one mounting member from the one side and a plurality of divided members connected to the one mounting member from the other side. A non-pneumatic tire characterized by connecting a plurality of divided bodies sandwiched between the divided bodies in the tire circumferential direction . The non-pneumatic tire according to claim 1 ,
The non-pneumatic tire is characterized in that the plurality of divided bodies are elastically rigidly displaceable so that all the surfaces are located on the same plane. The non-pneumatic tire according to claim 1 or 2 ,
On the outer peripheral surface side of the ring-shaped body, a tread member is disposed over the entire circumference,
A pattern groove is formed on the outer peripheral surface of the tread member,
Each non-pneumatic tire characterized in that each one end portion of the first connecting plate and the second connecting plate is connected to a position corresponding to the pattern groove on the inner peripheral surface side of the ring-shaped body. The non-pneumatic tire according to any one of claims 1 to 3 ,
Each one end part of the 1st connection plate and the 2nd connection plate in one connection member makes the position of a tire width direction mutually differ in the same position in the tire peripheral direction in the inner peripheral surface side of the above-mentioned ring-shaped object, and is different from each other. Concatenated,
In the connection member, a plurality of the first connection plates are arranged along the tire circumferential direction at one tire width direction position, and a plurality of the second connection plates are arranged along the tire circumferential direction at other tire width direction positions. A non-pneumatic tire characterized in that a plurality of tires are provided along the tire circumferential direction. The non-pneumatic tire according to any one of claims 1 to 4 ,
A non-pneumatic tire characterized by reinforcing ribs projecting inward in the radial direction of the tire on each back surface forming the inner peripheral surface of the ring-shaped body in the plurality of divided bodies. The non-pneumatic tire according to any one of claims 1 to 5 ,
The non-pneumatic tire, wherein the first connecting plate and the second connecting plate are each formed of a metal material or a resin material. The non-pneumatic tire according to any one of claims 1 to 6 ,
Each of the first connecting plate and the second connecting plate connected to the inner peripheral surface side of the ring-shaped body, and each of the first connecting plate and the second connecting plate connected to the outer peripheral surface side of the mounting body. At least one of the other end portions is supported so as to be rotatable about a rotation axis extending in parallel along the tire width direction.

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